Leather-shaving machine.



PATENTED JUNE 11, 1907.

G. A. WOODS.

LEATHER. SHAVING MACHINE.

APPLIOATION FILED JULYZ, 1906.

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No. 856,382. PATENTED JUNE 1l, 1907. G. A. WOODS. LEATHER SHAVING MACHINE.

APPLIoATIoN FILED JuLYz, 190e.

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C. A. WOODS. I

LEATHER SHAVING MACHINE.

APPLIGATION FILED JULYz, 190e.

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m llnlLf ww EPL. Il T -1% A muv CHARLES A. WOODS, OF LYNN, MASSACHUSETTS.

LEATHER-SHAVING MACHINE.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed July 2, 1906. Serial No. 324,325.

T0 all whom, it may concern:

Be it known that I, CHARLES A. VooDs, a subject of King Edward VII, residing at Lynn, .in the county of Essex and State of Massachusetts, have invented new and useful Improvements in Leather-Shaving Machines, of which the following is a specification.

This invention relates te machines for shaving leather-that is, for removing a slight thickness from the surface of a side of leather, the machine being so constructed and arranged that it is adapted te shear at one feed of the leather therethrough the entire surface of a side of leather.

The object of the invention is to provide a machine of the character hereinbe'fore set forth which is adapted te shave sides of leather of different thicknesses and which is so constructed and arranged that the side of leather may be conveniently and quickly fed into the machine and the surface of said leather shaved evenly throughout the entire extent of said side of leather. The machine is also so constructed that the cutter is continually sharpened by means of a grinding device which automatically nieves backward,

and forward in contact with the periphery of the cutter blades, thus keeping said cutter blades continually sharpened.

The invention consists in the combination and arrangement of parts set forth in the fellowing specificatien and particularly pointed out in the claims thereof.

Referring to the drawings: Figure 1 is a side elevation of my improved leather shaving machine. Fig. 2 is a plan view of the same. Fig. 3 is a detail section, partly in elevation, taken on line 3--3 of Fig. 2, illustrating the relative position of the feed rolls to the cutter, with a guide roll added thereto te guide the leather` downwardly. Fig. 4 is a detail section, partly in elevation, taken on line 4--4 of Fig. 1, illustrating the manner in which the lower feed roll rocker frame is connected to the rocker arms by which said rocker frame is actuated to move said lower feed roll toward and away from the rotary cutter. Fig. 5 is an end elevation of the rocker frames with their respective feed rolls thereon, together with a portion of the frame upon which said rocker arms are journaled.

Like numerals refer te like parts throughout the several views of the drawings.

In the drawings 8 is the frame of the machine consisting of two side standards fastened together by suitable stay-rods 9, 9. The leather 10 Fig. 3 is fed between two feed rolls 11 and 12 to a cutter 13 and is guided as it passes from between the feed rolls 11 and 12 by a guide roll 14. The lower feed roll 11 is jeurnaled in suitable bearing boxes 15 formed in the upper ends of arms 16, 1.6, said arms being joined together by a hub 17, the arms .16 and hub 17 forming a rocker frame 18 for the support ofthe lower feed roll 11.

The rocker frame 18 is pivoted to rock upon a rock-shaft 19 and is held normally in the position indicated in dotted lines (Fig. 1) by spiral springs 2() attached at one end thereof to the lower ends of the arms 16 and at the other end thereof to pins 21 fast to the frame standards 8. The rocker frame 18 is rocked upon the shaft 19 by means of a handle 22 which is fastened to a rock-shaft 23 journaled in bearings provided in the side standards 8, 8. Two arms 24 and 25 are fastened to said rock-shaftI the arm 24 being integral with the handle 22. Each of these arms 24 and 25 is connected to the rockerframe 18 by the following described mechanism, consisting ef a block 26 having cylindrical pins 27 projecting laterally therefrom which are ournaled to rock in said arm. The arms 24 and 25 are bifurcated and the blocks 26 are located in the space between the bifurcated portions of said arms. A link 2S in each case is pivoted te a stud 29 fast to one of the arms 16. A collar 30 is fastened to the link 28 and preferably has screwthreaded engagement therewith. A spiral spring 31 encircles the link 28 between the cellar 30 and the block 26. Upon the opposite side of the block 26 to that at which the spring 31 is located are a nut and check-nut 32 and 33, respectively, which have screwthreaded engagement with the outer end of the link 28.

The feed roll 12 is journaled upon the upper ends of two arms 34, 34 which are rigidly fastened to the rock-shaft 19, said arms, together with said shaft, forming a rockerframe 35. The lower end of each of said arms is slotted at 36 and through these slots project screws 37 which are rigidly fastened to the side standards 8. Cellars 38 are mounted upon said screws 37 upon each side, respectively, of the arms 34. Said screws are also provided with nuts 39 which clamp the collars S8 against the arms 34 and hohl said arms and the rocker-'frame 35 in a stationary position. When it is desired to rock IOO said rocker-frame to bring the guide roll 14 and feed roll 12 nearer to or farther from the rotary cutter 13, the nuts 39 are rotated in the proper direction to move the said rocker frame to the desired position. The feed roll 12 is extended beyond its bearing at the front of the machine and has a pulley 40 fast thereto by means of which a rotary motion is imparted to the feed roll 12. Said pulley is rotated by means of a belt 41, which is driven by a pulley 42 fast to a shaft 43 ournaled in the frame 8. Another pulley 44 is fastened to said shaft 43 and is driven by a belt 45, which, in turn, is driven by a pulley 46 fast to the main driving shaft 47, said main driving shaft 47 being journaled in suitable bearings upon the frame of the machine.

The rotary cutter 13 is provided with a series of helical shaped cutter blades 46. These cutter blades are kept sharpened by a grinding wheel 49 fast to a shaft 50 journaled in bearings upon brackets 54 slidable on the frame of the machine. Said grinding Wheel is splined to the shaft 50, so that it can be moved longitudinally thereof and runs between two arms 51 upon a slide 52. The slide 52, at one end thereof, slides upon the shaft 5() and at the other end thereof has screw-threaded engagement with a feedscrew 53. The feed-screw 53 is j ournaled at the opposite ends thereof in downwardly extending arms (not shown in the drawings) upon the brackets 54, said brackets being adapted to slide in ways 55 upon the top of the standards 8, 8. Said brackets 54y are moved in their respective ways by screws 56 having screw-threaded engagement with said brackets and being j ournaled to rotate upon brackets 57 fast to said side frame. The screws 56 each have a worm gear 58 fast thereto which meshes into a worm 59 fast to a shaft 60 journaled to rotate in said brackets 57. The shaft 60 is rotated by a hand wheel 61, thus rotating the worms 59 and worm gears 58 and the screws 56 and moving the brackets 54 toward the right or left (Fig. 1) and thus moving the grinding wheel toward or away from the rotary cutter as may be desired. The object of this adjustment of the grinder 49 toward and away from the rotary cutter 13 is to keep the grinder in contact with the cutter blades 48 as said blades are ground away. The slide 52 has a downwardly projecting arm 62 thereon adapted to engage arms 62, 62 fast to and projecting upwardly from a shipper-rod 63, and this shipper-rod extends across the machine and has a shipper 64 fast thereto which is adapted to engage the straight and cross belts 65 and 66, respectively. Said straight and cross belts are both driven by a pulley 67 fast to the shaft 43. to rotate the pulley 68 which is j ournaled to rotate loosely on the screw 53, and the cross belt 66 is adapted to rotate the pulley 70,

The straight belt 65 is adapted also journaled to rotate loosely upon said screw 53, both of the belts 65 and 66 being adapted to be moved by the shipper alternately onto and off of a pulley 69 fast to the screw 53.

-The shaft 50-is rotated by means of a pulley 71 fast thereto which, in turn, is rotated by a belt 72 driven by a drum 73 fast to a shaft 74 journaled at its opposite ends in brackets 75, 75 which are adapted to slide in ways 76 formed in the top of the side stand ards 8, 8. The brackets 75 are moved longitudinally of their ways by screws 77 having engagement therewith and journaled to rotate in bearings formed in brackets 78 fast to the side frames 8, 8. The screws 77 each has fastened thereto a worm gear 79 'which meshes into a worm 80 fast to a shaft 81 also j ournaled to rotate in the brackets 78. Said shaft 81 is rotated by means of a hand wheel 82 fast thereto. The shaft 74 is rotated by means of a pulley 83 fast thereto.

The rotary cutter 13 is fast to a shaft 84 j ournaled to rotate in bearings in the frame of the machine, said shaft being rotated by means of a pulley 85 fast thereto. The pulleys 83 and 85 are rotated by means of a belt 86 which is driven by a pulley 87 fast to the main driving shaft 47. An idler pulley 88 rotatably supported serves to keep the belt 86 tight.

The general operati on of the machine hereinbefore specifically described is as follows: Assuming the rocker frame 18 to be in the position illustrated in dotted lines (Fig. 1), the side of the leather 10 is placed over the feed roll 11 and under the feed roll 12 and guide roll 14. The operator then moves the rocker frame upon its pivotal shaft 19 by means of the handle 22 from the position illustrated in dotted lines (Fig. 1) to that shown in full lines therein, bringing the feed roll 11 beneath the feed roll 12 in the relative position illustrated in Fig. 3 and pressing the leather against the periphery of the cutter blades 48. The feed roll 11 and the rocker frame 18 are locked in the last named position-that is, while the leather is being shaved, by the links 28 and the arms 24 and 25, which at that time are in the position illustrated in Fig. 1, where the median lines of the studs 29, pivots 27, and shaft 19 all lie in one plane and are in alinement with each other, thus locking the feed roll 11 in position to hold the leather against the blades of the cutter while the same is being shaved. It will be noted, however, that if a portion of the leather thicker than another portion passes between the feed roll 11 and the cutter, said feed roll will have a chance to yield slightly by reason of the springs 31 yielding. l/Vhen the leather has been shaved upon one side, the operator moves the rocker frame toward the right to the position illustrated in dotted lines (Fig. 1), reverses the side of IOO IIC

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leather and feeds it into the machine with the other side toward the cutter. The rotary cutter 13 is kept continually sharpened by the grinding wheel 49 which is moved across the machine longitudinally of said critter' by the slide 52 and feed-screw 53. Then said slide arrives at the front side of the machine, the arm 62 upon the slide 52 strikes one of the arms 62 upon the shipper-rod 63, moves said shipper-rod 63 and shifts the cross belt off'of the pulley 70 and onto the pulley 69, at the same time shifting the straight belt from the pulley 68 onto the pulley 70, thus reversing the direction of rotation of the screw 53, and consequently reversing the direction of feed of the slide 52 and the grinder wheel 49 carried thereby. Vhen the slide 52 arrives at the back side of the machine it will strike the other arm 62 and shift the cross and straight belts back into the position illustrated in Fig. 2, thus reversing the motion of the machine again. Vhen the peripheries of the cutter blades become worn off by the grinding of the cutter, said cutters move toward the right to make up such wear by means of the hand wheel 61 and the mechanism operated thereby, hereinbefore described, which moves the brackets 54 toward the right along the ways 55. At the same time the shaft 74 and drum 73 are moved toward the right a like amount by rotating the hand wheel S2 and shaft 81, thus, through the worms 8O and worm gears 79, rotating the screws 77 and moving the brackets 75 toward the right (Fig: 1). The guide-roll 14 illustrated in Fig. 3 in connection with the feed rolls is used when heavyleather is being` shaved and is ournaled upon the upper end of the arms 34 of the rocker-frame 35. Said guide-roll is illustrated in position with relation to the feed-rolls only in Fig. 3, Figs. 1, 2 and 5 of the drawing being illustrated without the guide-roll, but with the feed rolls 11 and 12 incorporated therein.

Having thus described my invention, what I claim and desire by Letters Patent to secure is: i

1. A machine for shaving leather comprising in its construction a rotary cylindrical cutter, a pair of feed rolls adjacent to said cutter, and two rocker frames having a common median axial line, each of said feed rolls journaled to rotate, respectively, on one of said rocker frames.

,2. A machine for shaving leather comprising in its construction a rotary cylindrical cutter, a pair of feed rolls adjacent to said cutter, two rocker frames having a common median axial line, each of said feed rolls j ournaled to rotate, respectively, on one of said rocker frames, and means to adjust one of said rocker frames to regulate the location of its respective feed roll relatively to said cutter.

3. A machine for shaving leather comprising in its construction a rotary cylindrical cutter, a pair of feed rolls adjacent to said cutter, two rocker frames having a common median axial line, each of said feed rolls journaled to rotate, respectively, on one of said rocker frames, and means to rock one of said frames to move its respective feed roll toward or away from said cutter, and to lock said frame when its roll is in position, to feed said leather against said cutter.

4. A machine for shaving leather comprising in its construction a rotary cylindrical cutter, a pair of feed rolls adjacent to said cutter, two rocker frames having a common median axial line, each of said feed rolls journaled to rotate, respectively, on one of said rocker frames, and means to rock one of said frames to move its respective feed roll toward or away from said cutter and to yieldingly lock said frame when its roll is in position to feed said leather against said cutter.

5. A machine for shaving leather comprising in its construction a rotary cutter, a pair of feed rolls, one above the other, adjacent to said cutter, a rocker frame upon which the lower of said feed rolls is journaled, a rocks'haft, an arm fast to said rock-shaft, a block pivoted to said arm, and a link pivoted to said rocker frame projecting through said block and adapted to slide therein.

6. A machine for shaving leather comprising in its construction a rotary cutter, a pair of feed rolls, one above the other, adjacent to said cutter, a rocker frame upon which the lower of said feed rolls is, journaled, a rock shaft,an arm fast to said rock-shaft, a block pivoted to said arm, a link pivoted to said rocker frame projecting through said block and adapted to slide therein, a collar on said link, and a spring encircling said link between said collar and block.

7. A machine for shaving leather comprising in its construction a rotary cutter, a pair of feed rolls, one above the other, adjacent to said cutter, a rocker frame upon which the lower of said feed rolls is journalcd, a rockshaft, an arm fast to said rock-shaft, a block pivoted to said arm, a link pivoted to said rocker frame projecting through said block and adapted to slide therein, a collar on said link, a spring encircling said link between said collar and block, and a nut having screw threaded engagement with said link on the opposite side of said block to that upon which said spring is located.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHARLES A. WOODS.

Vitnesses:

Cuantas S. GooDING, ANNIE J. DAILEY.

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